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Date: Tue, 11 Apr 2017 16:28:24 +0000 (UTC)
From: Ankit Agarwal <ankit_agarwal@yahoo.com.INVALID>
Reply-To: Ankit Agarwal <ankit_agarwal@yahoo.com>
To: Tomcat Users List <users@tomcat.apache.org>
Message-ID: <1379118353.728921.1491928104237@mail.yahoo.com>
In-Reply-To: <51558a001e564de8877188bd37a005e1@CISEXCASMB02-1a.caci.com>
References: <BA7EB028-119D-438E-BF00-A2CBFF4398E0@yahoo.com> <51558a001e564de8877188bd37a005e1@CISEXCASMB02-1a.caci.com>
Subject: Re: Using Log4J2 2.8 (via the 1.2 API Bridge) for Tomcat8 Internal
 Logging - RollingFileAppender does not (cannot?) create new Log File
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Hi Cris,
1. No worries. All thoughts and questions are welcome because it helps me t=
hink too :)
2. You can replace the java.utils.logging entirely with Log4J in Tomcat. Se=
e the link I posted in my very first email. The Tomcat documentation provid=
es the steps.The only problem is that Tomcat only supports the Log4J 1.x AP=
I. It doesn't natively support Log4J2 so we have to use the 1.x -> 2.x Brid=
ge and some things do not work. E.g., I've found that the bridge does not s=
upport the "Delete" directive within the "DefaultRolloverStrategy", hence I=
 have to delete the old zipped Tomcat logs with a script myself - =C2=A0Mor=
e likely this is because "Delete" is a Log4J2 construct that Tomcat doesn't=
 know about yet
I'm replacing the internal logging of Tomcat so, e.g., the catalina log fil=
es and the localhost log files are written by Log4J instead of the standard=
 java.util.logging
Log4J2 works great within the WARs I deploy.
3. The problem is that, for me when the first log-able event occurs after t=
he old log file is zipped, a new log file is not created by the Tomcat Log4=
J. Instead nothing is logged and operations just fail. E.g., once the old l=
og file has been zipped, if I try to deploy a new WAR, it just fails becaus=
e there is no place to log messages (since the new log file was not created=
).
Once I restart Tomcat, everything works fine. It seems that the Tomcat Log4=
J only rolls over to a new file (i.e., creates it) on startup and not while=
 its running.

Ankit


    On Tuesday, April 11, 2017 7:41 AM, "Berneburg, Cris J. - US" <cbernebu=
rg@caci.com> wrote:
=20

 Ankit

-----Original Message-----
From: Ankit Agarwal [mailto:ankit_agarwal@...]=20
Sent: Monday, April 10, 2017 3:24 PM
To: users@tomcat.apache.org
Subject: Using Log4J2 2.8 (via the 1.2 API Bridge) for Tomcat8 Internal Log=
ging - RollingFileAppender does not (cannot?) create new Log File

> Hi,
>
> I=E2=80=99m using Log4J2 (2.8) via the 1.2 API Bridge for Tomcat 8 intern=
al logging.
>
> I followed the instructions here:
> https://tomcat.apache.org/tomcat-8.0-doc/logging.html#Using_Log4j
> <https://tomcat.apache.org/tomcat-8.0-doc/logging.html#Using_Log4j>
> - With the exception that I also copied the Bridge JAR into the Tomcat8 l=
ib directory
>
> I have configured Log4J2 with this XML file
>
> <?xml version=3D"1.0" encoding=3D"utf-8"?>
> <Configuration status=3D"info">
>=C2=A0 =C2=A0 =C2=A0 <Properties>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Property name=3D"logDirectory">${sys:c=
atalina.base}/logs</Property>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Property name=3D"systemName">CMS</Prop=
erty>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Property name=3D"componentName">Tomcat=
</Property>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Property name=3D"serverIpAddress">${en=
v:PUBLIC_IP_ADDRESS}</Property>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <!-- <Property name=3D"layout">%d [%t] =
%-5p %c- %m%n</Property> -->
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Property name=3D"layout">%d{DATE} "%d{=
ISO8601}" "${systemName}" "${componentName}" "%X{clientIpAddress}" "%X{clie=
ntTcpPort}" "%X{username}" "%X{sessionId}" "%X{sessionAuthenticationId}" "%=
X{sessionAuthenticationToken}" "${serverIpAddress}" "%T" "%t" "%X{apiName}"=
 "%X{apiSystemActionType}" "%X{apiSystemItemType}" "%x" "%l" "%p" "%m"%n%n<=
/Property>
>=C2=A0 =C2=A0 =C2=A0 </Properties>
>=C2=A0 =C2=A0 =C2=A0 <Appenders>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Console name=3D"CONSOLE" target=3D"SYS=
TEM_OUT">
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <PatternLayout pat=
tern=3D"${layout}"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Console>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <RollingFile name=3D"CATALINA" fileName=
=3D"${logDirectory}/catalina.log" filePattern=3D"${logDirectory}/catalina-%=
i.log.gz">
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <PatternLayout pat=
tern=3D"${layout}"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Policies>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Siz=
eBasedTriggeringPolicy size=3D=E2=80=9C100 MB" />
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Policies>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <DefaultRolloverSt=
rategy max=3D"20" />
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </RollingFile>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <RollingFile name=3D"LOCALHOST" fileNam=
e=3D"${logDirectory}/localhost.log" filePattern=3D"${logDirectory}/localhos=
t-%i.log.gz">
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <PatternLayout pat=
tern=3D"${layout}"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Policies>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Siz=
eBasedTriggeringPolicy size=3D"100 MB"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Policies>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <DefaultRolloverSt=
rategy max=3D"20" />
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </RollingFile>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <RollingFile name=3D"MANAGER" fileName=
=3D"${logDirectory}/manager.log" filePattern=3D"${logDirectory}/manager-%i.=
log.gz">
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <PatternLayout pat=
tern=3D"${layout}"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Policies>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Siz=
eBasedTriggeringPolicy size=3D"100 MB"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Policies>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <DefaultRolloverSt=
rategy max=3D"20" />
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </RollingFile>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <RollingFile name=3D"HOST-MANAGER" file=
Name=3D"${logDirectory}/host-manager.log" filePattern=3D"${logDirectory}/ho=
st-manager-%i.log.gz">
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <PatternLayout pat=
tern=3D"${layout}"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Policies>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Siz=
eBasedTriggeringPolicy size=3D"100 MB"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Policies>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <DefaultRolloverSt=
rategy max=3D"20" />
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </RollingFile>
>=C2=A0 =C2=A0 =C2=A0 </Appenders>
>=C2=A0 =C2=A0 =C2=A0 <Loggers>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Root level=3D"info">
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <AppenderRef ref=
=3D"CATALINA"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Root>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Logger name=3D"org.apache.catalina.cor=
e.ContainerBase.[Catalina].[localhost]" level=3D"info" additivity=3D"false"=
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <AppenderRef ref=
=3D"LOCALHOST"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Logger>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Logger name=3D"org.apache.catalina.cor=
e.ContainerBase.[Catalina].[localhost].[/manager]" level=3D"info" additivit=
y=3D"false">
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <AppenderRef ref=
=3D"MANAGER"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Logger>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <Logger name=3D"org.apache.catalina.cor=
e.ContainerBase.[Catalina].[localhost].[/host-manager]" level=3D"info" addi=
tivity=3D"false">
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <AppenderRef ref=
=3D"HOST-MANAGER"/>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 </Logger>
>=C2=A0 =C2=A0 =C2=A0 </Loggers>
> </Configuration>
>
> All 4 RollingFile Appenders are configured identically (except for
> the log filename).
>
> The problem I=E2=80=99m running into is that when the
> SizeBasedTriggeringPolicy is executed, the current log file is
> zipped. However, a new log file is not created.
>
> As a result, the Tomcat8 stops logging.
>
> If I restart Tomcat8, then a new file is created and the Tomcat8
> functions normally, but only until this new log file reaches its
> limit and is zipped up. Then once again, the problem repeats itself.
>
> Does the 1.2 API Bridge / Tomcat 8 not support the
> SizeBasedTriggeringPolicy?
>
> Do I have any options other than restarting the Tomcat8? Will the
> TimeBasedTriggeringPolicy work and is that my only option?
>
> Since the Log4J2 being used in Tomcat8 has no problem creating the
> required files on restart, I don=E2=80=99t think its a permissions issue.
>
> I=E2=80=99d appreciate any thoughts and pointers.
>
> Thanks,
> Ankit

3 things:

1. Sorry, I cannot answer your questions directly cuz I'm kind of newbie in=
 this arena.

2. Are you allowed to overwrite what log files that Tomcat would generate a=
nyway?=C2=A0 We use Log4J2 to create custom log files and leave the Tomcat-=
generated ones alone.=C2=A0 Maybe our configuration is a little wacky.=C2=
=A0 :-)

3. In my (very limited) experience, Log4J2 creates a new log file only when=
 the first log-able event actually happens.=C2=A0 IOW, it won't create an e=
mpty log file without actually having something to log.

Please let us know what you learn and how you progress in solving the issue=
!

--
Cris Berneburg
CACI Lead Software Engineer


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